setLimit

The maximum number of items to evaluate (not necessarily the number of matching items). If DynamoDB processes the
number of items up to the limit while processing the results, it stops the operation and returns the matching
values up to that point, and a key in LastEvaluatedKey to apply in a subsequent operation, so that
you can pick up where you left off. Also, if the processed dataset size exceeds 1 MB before DynamoDB reaches this
limit, it stops the operation and returns the matching values up to the limit, and a key in
LastEvaluatedKey to apply in a subsequent operation to continue the operation. For more information,
see Working with
Queries in the Amazon DynamoDB Developer Guide.

Parameters:

limit - The maximum number of items to evaluate (not necessarily the number of matching items). If DynamoDB
processes the number of items up to the limit while processing the results, it stops the operation and
returns the matching values up to that point, and a key in LastEvaluatedKey to apply in a
subsequent operation, so that you can pick up where you left off. Also, if the processed dataset size
exceeds 1 MB before DynamoDB reaches this limit, it stops the operation and returns the matching values up
to the limit, and a key in LastEvaluatedKey to apply in a subsequent operation to continue
the operation. For more information, see Working with
Queries in the Amazon DynamoDB Developer Guide.

getLimit

The maximum number of items to evaluate (not necessarily the number of matching items). If DynamoDB processes the
number of items up to the limit while processing the results, it stops the operation and returns the matching
values up to that point, and a key in LastEvaluatedKey to apply in a subsequent operation, so that
you can pick up where you left off. Also, if the processed dataset size exceeds 1 MB before DynamoDB reaches this
limit, it stops the operation and returns the matching values up to the limit, and a key in
LastEvaluatedKey to apply in a subsequent operation to continue the operation. For more information,
see Working with
Queries in the Amazon DynamoDB Developer Guide.

Returns:

The maximum number of items to evaluate (not necessarily the number of matching items). If DynamoDB
processes the number of items up to the limit while processing the results, it stops the operation and
returns the matching values up to that point, and a key in LastEvaluatedKey to apply in a
subsequent operation, so that you can pick up where you left off. Also, if the processed dataset size
exceeds 1 MB before DynamoDB reaches this limit, it stops the operation and returns the matching values
up to the limit, and a key in LastEvaluatedKey to apply in a subsequent operation to
continue the operation. For more information, see Working with
Queries in the Amazon DynamoDB Developer Guide.

withLimit

The maximum number of items to evaluate (not necessarily the number of matching items). If DynamoDB processes the
number of items up to the limit while processing the results, it stops the operation and returns the matching
values up to that point, and a key in LastEvaluatedKey to apply in a subsequent operation, so that
you can pick up where you left off. Also, if the processed dataset size exceeds 1 MB before DynamoDB reaches this
limit, it stops the operation and returns the matching values up to the limit, and a key in
LastEvaluatedKey to apply in a subsequent operation to continue the operation. For more information,
see Working with
Queries in the Amazon DynamoDB Developer Guide.

Parameters:

limit - The maximum number of items to evaluate (not necessarily the number of matching items). If DynamoDB
processes the number of items up to the limit while processing the results, it stops the operation and
returns the matching values up to that point, and a key in LastEvaluatedKey to apply in a
subsequent operation, so that you can pick up where you left off. Also, if the processed dataset size
exceeds 1 MB before DynamoDB reaches this limit, it stops the operation and returns the matching values up
to the limit, and a key in LastEvaluatedKey to apply in a subsequent operation to continue
the operation. For more information, see Working with
Queries in the Amazon DynamoDB Developer Guide.

Returns:

Returns a reference to this object so that method calls can be chained together.

setSelect

The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the
count of matching items, or in the case of an index, some or all of the attributes projected into the index.

ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query
a local secondary index, then for each matching item in the index, DynamoDB fetches the entire item from the
parent table. If the index is configured to project all item attributes, then all of the data can be obtained
from the local secondary index, and no fetching is required.

ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have
been projected into the index. If the index is configured to project all attributes, this return value is
equivalent to specifying ALL_ATTRIBUTES.

COUNT - Returns the number of matching items, rather than the matching items themselves.

SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This
return value is equivalent to specifying AttributesToGet without specifying any value for
Select.

If you query or scan a local secondary index and request only attributes that are projected into that index, the
operation reads only the index and not the table. If any of the requested attributes are not projected into the
local secondary index, DynamoDB fetches each of these attributes from the parent table. This extra fetching
incurs additional throughput cost and latency.

If you query or scan a global secondary index, you can only request attributes that are projected into the index.
Global secondary index queries cannot fetch attributes from the parent table.

If neither Select nor AttributesToGet are specified, DynamoDB defaults to
ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an
index. You cannot use both Select and AttributesToGet together in a single request,
unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to
specifying AttributesToGet without any value for Select.)

If you use the ProjectionExpression parameter, then the value for Select can only be
SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.

Parameters:

select - The attributes to be returned in the result. You can retrieve all item attributes, specific item
attributes, the count of matching items, or in the case of an index, some or all of the attributes
projected into the index.

ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you
query a local secondary index, then for each matching item in the index, DynamoDB fetches the entire item
from the parent table. If the index is configured to project all item attributes, then all of the data can
be obtained from the local secondary index, and no fetching is required.

ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that
have been projected into the index. If the index is configured to project all attributes, this return
value is equivalent to specifying ALL_ATTRIBUTES.

COUNT - Returns the number of matching items, rather than the matching items themselves.

SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet.
This return value is equivalent to specifying AttributesToGet without specifying any value
for Select.

If you query or scan a local secondary index and request only attributes that are projected into that
index, the operation reads only the index and not the table. If any of the requested attributes are not
projected into the local secondary index, DynamoDB fetches each of these attributes from the parent table.
This extra fetching incurs additional throughput cost and latency.

If you query or scan a global secondary index, you can only request attributes that are projected into the
index. Global secondary index queries cannot fetch attributes from the parent table.

If neither Select nor AttributesToGet are specified, DynamoDB defaults to
ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when
accessing an index. You cannot use both Select and AttributesToGet together in a
single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage
is equivalent to specifying AttributesToGet without any value for Select.)

If you use the ProjectionExpression parameter, then the value for Select can
only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.

getSelect

The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the
count of matching items, or in the case of an index, some or all of the attributes projected into the index.

ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query
a local secondary index, then for each matching item in the index, DynamoDB fetches the entire item from the
parent table. If the index is configured to project all item attributes, then all of the data can be obtained
from the local secondary index, and no fetching is required.

ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have
been projected into the index. If the index is configured to project all attributes, this return value is
equivalent to specifying ALL_ATTRIBUTES.

COUNT - Returns the number of matching items, rather than the matching items themselves.

SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This
return value is equivalent to specifying AttributesToGet without specifying any value for
Select.

If you query or scan a local secondary index and request only attributes that are projected into that index, the
operation reads only the index and not the table. If any of the requested attributes are not projected into the
local secondary index, DynamoDB fetches each of these attributes from the parent table. This extra fetching
incurs additional throughput cost and latency.

If you query or scan a global secondary index, you can only request attributes that are projected into the index.
Global secondary index queries cannot fetch attributes from the parent table.

If neither Select nor AttributesToGet are specified, DynamoDB defaults to
ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an
index. You cannot use both Select and AttributesToGet together in a single request,
unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to
specifying AttributesToGet without any value for Select.)

If you use the ProjectionExpression parameter, then the value for Select can only be
SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.

Returns:

The attributes to be returned in the result. You can retrieve all item attributes, specific item
attributes, the count of matching items, or in the case of an index, some or all of the attributes
projected into the index.

ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If
you query a local secondary index, then for each matching item in the index, DynamoDB fetches the entire
item from the parent table. If the index is configured to project all item attributes, then all of the
data can be obtained from the local secondary index, and no fetching is required.

ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes
that have been projected into the index. If the index is configured to project all attributes, this
return value is equivalent to specifying ALL_ATTRIBUTES.

COUNT - Returns the number of matching items, rather than the matching items themselves.

SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet.
This return value is equivalent to specifying AttributesToGet without specifying any value
for Select.

If you query or scan a local secondary index and request only attributes that are projected into that
index, the operation reads only the index and not the table. If any of the requested attributes are not
projected into the local secondary index, DynamoDB fetches each of these attributes from the parent
table. This extra fetching incurs additional throughput cost and latency.

If you query or scan a global secondary index, you can only request attributes that are projected into
the index. Global secondary index queries cannot fetch attributes from the parent table.

If neither Select nor AttributesToGet are specified, DynamoDB defaults to
ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when
accessing an index. You cannot use both Select and AttributesToGet together in
a single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This
usage is equivalent to specifying AttributesToGet without any value for Select
.)

If you use the ProjectionExpression parameter, then the value for Select can
only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.

withSelect

The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the
count of matching items, or in the case of an index, some or all of the attributes projected into the index.

ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query
a local secondary index, then for each matching item in the index, DynamoDB fetches the entire item from the
parent table. If the index is configured to project all item attributes, then all of the data can be obtained
from the local secondary index, and no fetching is required.

ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have
been projected into the index. If the index is configured to project all attributes, this return value is
equivalent to specifying ALL_ATTRIBUTES.

COUNT - Returns the number of matching items, rather than the matching items themselves.

SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This
return value is equivalent to specifying AttributesToGet without specifying any value for
Select.

If you query or scan a local secondary index and request only attributes that are projected into that index, the
operation reads only the index and not the table. If any of the requested attributes are not projected into the
local secondary index, DynamoDB fetches each of these attributes from the parent table. This extra fetching
incurs additional throughput cost and latency.

If you query or scan a global secondary index, you can only request attributes that are projected into the index.
Global secondary index queries cannot fetch attributes from the parent table.

If neither Select nor AttributesToGet are specified, DynamoDB defaults to
ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an
index. You cannot use both Select and AttributesToGet together in a single request,
unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to
specifying AttributesToGet without any value for Select.)

If you use the ProjectionExpression parameter, then the value for Select can only be
SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.

Parameters:

select - The attributes to be returned in the result. You can retrieve all item attributes, specific item
attributes, the count of matching items, or in the case of an index, some or all of the attributes
projected into the index.

ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you
query a local secondary index, then for each matching item in the index, DynamoDB fetches the entire item
from the parent table. If the index is configured to project all item attributes, then all of the data can
be obtained from the local secondary index, and no fetching is required.

ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that
have been projected into the index. If the index is configured to project all attributes, this return
value is equivalent to specifying ALL_ATTRIBUTES.

COUNT - Returns the number of matching items, rather than the matching items themselves.

SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet.
This return value is equivalent to specifying AttributesToGet without specifying any value
for Select.

If you query or scan a local secondary index and request only attributes that are projected into that
index, the operation reads only the index and not the table. If any of the requested attributes are not
projected into the local secondary index, DynamoDB fetches each of these attributes from the parent table.
This extra fetching incurs additional throughput cost and latency.

If you query or scan a global secondary index, you can only request attributes that are projected into the
index. Global secondary index queries cannot fetch attributes from the parent table.

If neither Select nor AttributesToGet are specified, DynamoDB defaults to
ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when
accessing an index. You cannot use both Select and AttributesToGet together in a
single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage
is equivalent to specifying AttributesToGet without any value for Select.)

If you use the ProjectionExpression parameter, then the value for Select can
only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.

Returns:

Returns a reference to this object so that method calls can be chained together.

setSelect

The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the
count of matching items, or in the case of an index, some or all of the attributes projected into the index.

ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query
a local secondary index, then for each matching item in the index, DynamoDB fetches the entire item from the
parent table. If the index is configured to project all item attributes, then all of the data can be obtained
from the local secondary index, and no fetching is required.

ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have
been projected into the index. If the index is configured to project all attributes, this return value is
equivalent to specifying ALL_ATTRIBUTES.

COUNT - Returns the number of matching items, rather than the matching items themselves.

SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This
return value is equivalent to specifying AttributesToGet without specifying any value for
Select.

If you query or scan a local secondary index and request only attributes that are projected into that index, the
operation reads only the index and not the table. If any of the requested attributes are not projected into the
local secondary index, DynamoDB fetches each of these attributes from the parent table. This extra fetching
incurs additional throughput cost and latency.

If you query or scan a global secondary index, you can only request attributes that are projected into the index.
Global secondary index queries cannot fetch attributes from the parent table.

If neither Select nor AttributesToGet are specified, DynamoDB defaults to
ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an
index. You cannot use both Select and AttributesToGet together in a single request,
unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to
specifying AttributesToGet without any value for Select.)

If you use the ProjectionExpression parameter, then the value for Select can only be
SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.

Parameters:

select - The attributes to be returned in the result. You can retrieve all item attributes, specific item
attributes, the count of matching items, or in the case of an index, some or all of the attributes
projected into the index.

ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you
query a local secondary index, then for each matching item in the index, DynamoDB fetches the entire item
from the parent table. If the index is configured to project all item attributes, then all of the data can
be obtained from the local secondary index, and no fetching is required.

ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that
have been projected into the index. If the index is configured to project all attributes, this return
value is equivalent to specifying ALL_ATTRIBUTES.

COUNT - Returns the number of matching items, rather than the matching items themselves.

SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet.
This return value is equivalent to specifying AttributesToGet without specifying any value
for Select.

If you query or scan a local secondary index and request only attributes that are projected into that
index, the operation reads only the index and not the table. If any of the requested attributes are not
projected into the local secondary index, DynamoDB fetches each of these attributes from the parent table.
This extra fetching incurs additional throughput cost and latency.

If you query or scan a global secondary index, you can only request attributes that are projected into the
index. Global secondary index queries cannot fetch attributes from the parent table.

If neither Select nor AttributesToGet are specified, DynamoDB defaults to
ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when
accessing an index. You cannot use both Select and AttributesToGet together in a
single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage
is equivalent to specifying AttributesToGet without any value for Select.)

If you use the ProjectionExpression parameter, then the value for Select can
only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.

withSelect

The attributes to be returned in the result. You can retrieve all item attributes, specific item attributes, the
count of matching items, or in the case of an index, some or all of the attributes projected into the index.

ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you query
a local secondary index, then for each matching item in the index, DynamoDB fetches the entire item from the
parent table. If the index is configured to project all item attributes, then all of the data can be obtained
from the local secondary index, and no fetching is required.

ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that have
been projected into the index. If the index is configured to project all attributes, this return value is
equivalent to specifying ALL_ATTRIBUTES.

COUNT - Returns the number of matching items, rather than the matching items themselves.

SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet. This
return value is equivalent to specifying AttributesToGet without specifying any value for
Select.

If you query or scan a local secondary index and request only attributes that are projected into that index, the
operation reads only the index and not the table. If any of the requested attributes are not projected into the
local secondary index, DynamoDB fetches each of these attributes from the parent table. This extra fetching
incurs additional throughput cost and latency.

If you query or scan a global secondary index, you can only request attributes that are projected into the index.
Global secondary index queries cannot fetch attributes from the parent table.

If neither Select nor AttributesToGet are specified, DynamoDB defaults to
ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when accessing an
index. You cannot use both Select and AttributesToGet together in a single request,
unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent to
specifying AttributesToGet without any value for Select.)

If you use the ProjectionExpression parameter, then the value for Select can only be
SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.

Parameters:

select - The attributes to be returned in the result. You can retrieve all item attributes, specific item
attributes, the count of matching items, or in the case of an index, some or all of the attributes
projected into the index.

ALL_ATTRIBUTES - Returns all of the item attributes from the specified table or index. If you
query a local secondary index, then for each matching item in the index, DynamoDB fetches the entire item
from the parent table. If the index is configured to project all item attributes, then all of the data can
be obtained from the local secondary index, and no fetching is required.

ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves all attributes that
have been projected into the index. If the index is configured to project all attributes, this return
value is equivalent to specifying ALL_ATTRIBUTES.

COUNT - Returns the number of matching items, rather than the matching items themselves.

SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet.
This return value is equivalent to specifying AttributesToGet without specifying any value
for Select.

If you query or scan a local secondary index and request only attributes that are projected into that
index, the operation reads only the index and not the table. If any of the requested attributes are not
projected into the local secondary index, DynamoDB fetches each of these attributes from the parent table.
This extra fetching incurs additional throughput cost and latency.

If you query or scan a global secondary index, you can only request attributes that are projected into the
index. Global secondary index queries cannot fetch attributes from the parent table.

If neither Select nor AttributesToGet are specified, DynamoDB defaults to
ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when
accessing an index. You cannot use both Select and AttributesToGet together in a
single request, unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage
is equivalent to specifying AttributesToGet without any value for Select.)

If you use the ProjectionExpression parameter, then the value for Select can
only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an error.

Returns:

Returns a reference to this object so that method calls can be chained together.

setTotalSegments

For a parallel Scan request, TotalSegments represents the total number of segments into
which the Scan operation will be divided. The value of TotalSegments corresponds to the
number of application workers that will perform the parallel scan. For example, if you want to use four
application threads to scan a table or an index, specify a TotalSegments value of 4.

The value for TotalSegments must be greater than or equal to 1, and less than or equal to 1000000.
If you specify a TotalSegments value of 1, the Scan operation will be sequential rather
than parallel.

If you specify TotalSegments, you must also specify Segment.

Parameters:

totalSegments - For a parallel Scan request, TotalSegments represents the total number of
segments into which the Scan operation will be divided. The value of
TotalSegments corresponds to the number of application workers that will perform the parallel
scan. For example, if you want to use four application threads to scan a table or an index, specify a
TotalSegments value of 4.

The value for TotalSegments must be greater than or equal to 1, and less than or equal to
1000000. If you specify a TotalSegments value of 1, the Scan operation will be
sequential rather than parallel.

If you specify TotalSegments, you must also specify Segment.

getTotalSegments

For a parallel Scan request, TotalSegments represents the total number of segments into
which the Scan operation will be divided. The value of TotalSegments corresponds to the
number of application workers that will perform the parallel scan. For example, if you want to use four
application threads to scan a table or an index, specify a TotalSegments value of 4.

The value for TotalSegments must be greater than or equal to 1, and less than or equal to 1000000.
If you specify a TotalSegments value of 1, the Scan operation will be sequential rather
than parallel.

If you specify TotalSegments, you must also specify Segment.

Returns:

For a parallel Scan request, TotalSegments represents the total number of
segments into which the Scan operation will be divided. The value of
TotalSegments corresponds to the number of application workers that will perform the
parallel scan. For example, if you want to use four application threads to scan a table or an index,
specify a TotalSegments value of 4.

The value for TotalSegments must be greater than or equal to 1, and less than or equal to
1000000. If you specify a TotalSegments value of 1, the Scan operation will be
sequential rather than parallel.

If you specify TotalSegments, you must also specify Segment.

withTotalSegments

For a parallel Scan request, TotalSegments represents the total number of segments into
which the Scan operation will be divided. The value of TotalSegments corresponds to the
number of application workers that will perform the parallel scan. For example, if you want to use four
application threads to scan a table or an index, specify a TotalSegments value of 4.

The value for TotalSegments must be greater than or equal to 1, and less than or equal to 1000000.
If you specify a TotalSegments value of 1, the Scan operation will be sequential rather
than parallel.

If you specify TotalSegments, you must also specify Segment.

Parameters:

totalSegments - For a parallel Scan request, TotalSegments represents the total number of
segments into which the Scan operation will be divided. The value of
TotalSegments corresponds to the number of application workers that will perform the parallel
scan. For example, if you want to use four application threads to scan a table or an index, specify a
TotalSegments value of 4.

The value for TotalSegments must be greater than or equal to 1, and less than or equal to
1000000. If you specify a TotalSegments value of 1, the Scan operation will be
sequential rather than parallel.

If you specify TotalSegments, you must also specify Segment.

Returns:

Returns a reference to this object so that method calls can be chained together.

setSegment

For a parallel Scan request, Segment identifies an individual segment to be scanned by
an application worker.

Segment IDs are zero-based, so the first segment is always 0. For example, if you want to use four application
threads to scan a table or an index, then the first thread specifies a Segment value of 0, the
second thread specifies 1, and so on.

The value of LastEvaluatedKey returned from a parallel Scan request must be used as
ExclusiveStartKey with the same segment ID in a subsequent Scan operation.

The value for Segment must be greater than or equal to 0, and less than the value provided for
TotalSegments.

If you provide Segment, you must also provide TotalSegments.

Parameters:

segment - For a parallel Scan request, Segment identifies an individual segment to be
scanned by an application worker.

Segment IDs are zero-based, so the first segment is always 0. For example, if you want to use four
application threads to scan a table or an index, then the first thread specifies a Segment
value of 0, the second thread specifies 1, and so on.

The value of LastEvaluatedKey returned from a parallel Scan request must be used
as ExclusiveStartKey with the same segment ID in a subsequent Scan operation.

The value for Segment must be greater than or equal to 0, and less than the value provided
for TotalSegments.

If you provide Segment, you must also provide TotalSegments.

getSegment

For a parallel Scan request, Segment identifies an individual segment to be scanned by
an application worker.

Segment IDs are zero-based, so the first segment is always 0. For example, if you want to use four application
threads to scan a table or an index, then the first thread specifies a Segment value of 0, the
second thread specifies 1, and so on.

The value of LastEvaluatedKey returned from a parallel Scan request must be used as
ExclusiveStartKey with the same segment ID in a subsequent Scan operation.

The value for Segment must be greater than or equal to 0, and less than the value provided for
TotalSegments.

If you provide Segment, you must also provide TotalSegments.

Returns:

For a parallel Scan request, Segment identifies an individual segment to be
scanned by an application worker.

Segment IDs are zero-based, so the first segment is always 0. For example, if you want to use four
application threads to scan a table or an index, then the first thread specifies a Segment
value of 0, the second thread specifies 1, and so on.

The value of LastEvaluatedKey returned from a parallel Scan request must be
used as ExclusiveStartKey with the same segment ID in a subsequent Scan
operation.

The value for Segment must be greater than or equal to 0, and less than the value provided
for TotalSegments.

If you provide Segment, you must also provide TotalSegments.

withSegment

For a parallel Scan request, Segment identifies an individual segment to be scanned by
an application worker.

Segment IDs are zero-based, so the first segment is always 0. For example, if you want to use four application
threads to scan a table or an index, then the first thread specifies a Segment value of 0, the
second thread specifies 1, and so on.

The value of LastEvaluatedKey returned from a parallel Scan request must be used as
ExclusiveStartKey with the same segment ID in a subsequent Scan operation.

The value for Segment must be greater than or equal to 0, and less than the value provided for
TotalSegments.

If you provide Segment, you must also provide TotalSegments.

Parameters:

segment - For a parallel Scan request, Segment identifies an individual segment to be
scanned by an application worker.

Segment IDs are zero-based, so the first segment is always 0. For example, if you want to use four
application threads to scan a table or an index, then the first thread specifies a Segment
value of 0, the second thread specifies 1, and so on.

The value of LastEvaluatedKey returned from a parallel Scan request must be used
as ExclusiveStartKey with the same segment ID in a subsequent Scan operation.

The value for Segment must be greater than or equal to 0, and less than the value provided
for TotalSegments.

If you provide Segment, you must also provide TotalSegments.

Returns:

Returns a reference to this object so that method calls can be chained together.

setProjectionExpression

A string that identifies one or more attributes to retrieve from the specified table or index. These attributes
can include scalars, sets, or elements of a JSON document. The attributes in the expression must be separated by
commas.

If no attribute names are specified, then all attributes will be returned. If any of the requested attributes are
not found, they will not appear in the result.

projectionExpression - A string that identifies one or more attributes to retrieve from the specified table or index. These
attributes can include scalars, sets, or elements of a JSON document. The attributes in the expression
must be separated by commas.

If no attribute names are specified, then all attributes will be returned. If any of the requested
attributes are not found, they will not appear in the result.

getProjectionExpression

A string that identifies one or more attributes to retrieve from the specified table or index. These attributes
can include scalars, sets, or elements of a JSON document. The attributes in the expression must be separated by
commas.

If no attribute names are specified, then all attributes will be returned. If any of the requested attributes are
not found, they will not appear in the result.

A string that identifies one or more attributes to retrieve from the specified table or index. These
attributes can include scalars, sets, or elements of a JSON document. The attributes in the expression
must be separated by commas.

If no attribute names are specified, then all attributes will be returned. If any of the requested
attributes are not found, they will not appear in the result.

withProjectionExpression

A string that identifies one or more attributes to retrieve from the specified table or index. These attributes
can include scalars, sets, or elements of a JSON document. The attributes in the expression must be separated by
commas.

If no attribute names are specified, then all attributes will be returned. If any of the requested attributes are
not found, they will not appear in the result.

projectionExpression - A string that identifies one or more attributes to retrieve from the specified table or index. These
attributes can include scalars, sets, or elements of a JSON document. The attributes in the expression
must be separated by commas.

If no attribute names are specified, then all attributes will be returned. If any of the requested
attributes are not found, they will not appear in the result.

filterExpression - A string that contains conditions that DynamoDB applies after the Scan operation, but before
the data is returned to you. Items that do not satisfy the FilterExpression criteria are not
returned.

A FilterExpression is applied after the items have already been read; the process of
filtering does not consume any additional read capacity units.

filterExpression - A string that contains conditions that DynamoDB applies after the Scan operation, but before
the data is returned to you. Items that do not satisfy the FilterExpression criteria are not
returned.

A FilterExpression is applied after the items have already been read; the process of
filtering does not consume any additional read capacity units.

getExpressionAttributeNames

One or more substitution tokens for attribute names in an expression. The following are some use cases for using
ExpressionAttributeNames:

To access an attribute whose name conflicts with a DynamoDB reserved word.

To create a placeholder for repeating occurrences of an attribute name in an expression.

To prevent special characters in an attribute name from being misinterpreted in an expression.

Use the # character in an expression to dereference an attribute name. For example, consider the following
attribute name:

Percentile

The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For
the complete list of reserved words, see Reserved Words in
the Amazon DynamoDB Developer Guide). To work around this, you could specify the following for
ExpressionAttributeNames:

{"#P":"Percentile"}

You could then use this substitution in an expression, as in this example:

#P = :val

Tokens that begin with the : character are expression attribute values, which are placeholders for
the actual value at runtime.

One or more substitution tokens for attribute names in an expression. The following are some use cases
for using ExpressionAttributeNames:

To access an attribute whose name conflicts with a DynamoDB reserved word.

To create a placeholder for repeating occurrences of an attribute name in an expression.

To prevent special characters in an attribute name from being misinterpreted in an expression.

Use the # character in an expression to dereference an attribute name. For example, consider the
following attribute name:

Percentile

The name of this attribute conflicts with a reserved word, so it cannot be used directly in an
expression. (For the complete list of reserved words, see Reserved
Words in the Amazon DynamoDB Developer Guide). To work around this, you could specify the
following for ExpressionAttributeNames:

{"#P":"Percentile"}

You could then use this substitution in an expression, as in this example:

#P = :val

Tokens that begin with the : character are expression attribute values, which are
placeholders for the actual value at runtime.

setExpressionAttributeNames

One or more substitution tokens for attribute names in an expression. The following are some use cases for using
ExpressionAttributeNames:

To access an attribute whose name conflicts with a DynamoDB reserved word.

To create a placeholder for repeating occurrences of an attribute name in an expression.

To prevent special characters in an attribute name from being misinterpreted in an expression.

Use the # character in an expression to dereference an attribute name. For example, consider the following
attribute name:

Percentile

The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For
the complete list of reserved words, see Reserved Words in
the Amazon DynamoDB Developer Guide). To work around this, you could specify the following for
ExpressionAttributeNames:

{"#P":"Percentile"}

You could then use this substitution in an expression, as in this example:

#P = :val

Tokens that begin with the : character are expression attribute values, which are placeholders for
the actual value at runtime.

expressionAttributeNames - One or more substitution tokens for attribute names in an expression. The following are some use cases for
using ExpressionAttributeNames:

To access an attribute whose name conflicts with a DynamoDB reserved word.

To create a placeholder for repeating occurrences of an attribute name in an expression.

To prevent special characters in an attribute name from being misinterpreted in an expression.

Use the # character in an expression to dereference an attribute name. For example, consider the
following attribute name:

Percentile

The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression.
(For the complete list of reserved words, see Reserved
Words in the Amazon DynamoDB Developer Guide). To work around this, you could specify the
following for ExpressionAttributeNames:

{"#P":"Percentile"}

You could then use this substitution in an expression, as in this example:

#P = :val

Tokens that begin with the : character are expression attribute values, which are
placeholders for the actual value at runtime.

withExpressionAttributeNames

One or more substitution tokens for attribute names in an expression. The following are some use cases for using
ExpressionAttributeNames:

To access an attribute whose name conflicts with a DynamoDB reserved word.

To create a placeholder for repeating occurrences of an attribute name in an expression.

To prevent special characters in an attribute name from being misinterpreted in an expression.

Use the # character in an expression to dereference an attribute name. For example, consider the following
attribute name:

Percentile

The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression. (For
the complete list of reserved words, see Reserved Words in
the Amazon DynamoDB Developer Guide). To work around this, you could specify the following for
ExpressionAttributeNames:

{"#P":"Percentile"}

You could then use this substitution in an expression, as in this example:

#P = :val

Tokens that begin with the : character are expression attribute values, which are placeholders for
the actual value at runtime.

expressionAttributeNames - One or more substitution tokens for attribute names in an expression. The following are some use cases for
using ExpressionAttributeNames:

To access an attribute whose name conflicts with a DynamoDB reserved word.

To create a placeholder for repeating occurrences of an attribute name in an expression.

To prevent special characters in an attribute name from being misinterpreted in an expression.

Use the # character in an expression to dereference an attribute name. For example, consider the
following attribute name:

Percentile

The name of this attribute conflicts with a reserved word, so it cannot be used directly in an expression.
(For the complete list of reserved words, see Reserved
Words in the Amazon DynamoDB Developer Guide). To work around this, you could specify the
following for ExpressionAttributeNames:

{"#P":"Percentile"}

You could then use this substitution in an expression, as in this example:

#P = :val

Tokens that begin with the : character are expression attribute values, which are
placeholders for the actual value at runtime.